#include <iostream>
using namespace std;

int main()
{
    //转义字符

    //换行符 \n
    cout << "hello world!\n";

    //反斜杠 \\

    cout << "\\" << endl;

    //水平制表符 \t     用于对齐，一个tab键
    cout << "aaa\thelloworld" << endl;
    cout << "aaaaa\thelloworld" << endl;
    cout << "a\thelloworld" << endl;

    // 响铃\a
    cout << "\a" << endl;
}